
Operation
At speeds of up to approximately 80 km/h
(50 mph), it i
s ab
le to balance out differences
in the speed of the driven wheels of approxi-
mately 100 rpm/min caused by a partially
slippery road surface. It does this by braking
the wheel which has lost traction and distrib-
uting more driving force to the other driven
wheel via the differential.
To prevent the disc brake of the braking
wheel from overheating, the EDL cuts out au-
tomatically if subjected to excessive loads.
The vehicle will continue to function normally
without EDL. For this reason, the driver is not
informed that the EDL has been switched off.
The EDL will switch on again automatically
when the brake has cooled down.
Control lamp
A malfunction in the EDL is indicated by the
ABS control lamp ››› page 158. Take the
vehicle to a specialised workshop as soon as
possible. WARNING
● When accel er
ating on a slippery surface,
for example on ice and snow, press the accel-
erator carefully. Despite EDL, the driven
wheels may start to spin. This could impair
the vehicle's stability.
● Always adapt your driving style to suit road
conditions and the tr
affic situation. Do not let
the extra safety afforded by EDL tempt you in- to taking any risks when driving, this can
cause ac
c
idents. CAUTION
Modifications to the vehicle (e.g. to the en-
gine, the br ake sys
tem, running gear or any
components affecting the wheels and tyres)
could affect the efficiency of the EDL
››› page 190. Hydraulic Brake Assist (HBA)*
The function (Hydraulic Brake Assist HBA) is
on
ly
inc luded in
vehicles with ESC.
In an emergency, most drivers brake in time,
but not with maximum force. This results in
unnecessarily long braking distances.
This is when the brake assist system comes
into action. When pressing the brake pedal
rapidly, the assistant interprets it as an emer-
gency. It very quickly builds up the full brake
pressure so that the ABS can be activated
more quickly and efficiently, thus reducing
braking distance.
Do not reduce the pressure on the brake ped-
al, since the brake assist system switches off
automatically as soon as you release the
brake. Automatic hazard warning lights activation
The brake lights fl
ash automatically to indi-
cate that the vehicle is braking suddenly or in
an emergency situation. If the emergency
braking continues until the vehicle comes to
a standstill, the hazard warning lights will
then come on and the brake lights will re-
main on permanently from that moment. The
warning lights will automatically switch off
when the vehicle begins to move again or
when the "warning" light button is pressed. WARNING
● The risk of ac
cident is higher if you drive
too fast, if you do not keep your distance from
the vehicle in front, and when the road sur-
face is slippery or wet. The increased acci-
dent risk cannot be reduced by the brake as-
sist system.
● The brake assist system cannot defy the
laws
of physics. Slippery and wet roads are
dangerous even with the brake assist system!
Therefore, it is essential that you adjust your
speed to suit the road and traffic conditions.
Do not let the extra safety features tempt you
into taking any risks when driving. Anti-lock brake system (ABS)
The anti-lock brake (ABS) system prevents
the wheel
s
fr om loc
king during braking and
is an important part of the vehicle's active
safety system.
158

Driving
How the ABS works
If one of
the wheel s
turns too slowly in rela-
tion to the vehicle's speed, and is close to
locking, the system will reduce the braking
pressure to this wheel. The driver is made
aware of this control process by a pulsating
of the brake pedal and audible noise. This is
a deliberate warning to the driver that one or
more of the wheels is tending to lock and the
ABS control function has intervened. In this
situation it is important to keep the brake
pedal fully depressed so the ABS can regu-
late the brake application. Do not “pump”.
If you brake hard on a slippery road surface,
the best possible control is retained as the
wheels do not lock.
However, ABS will not necessarily guarantee
shorter braking distances in all conditions.
Braking distance could even be further if you
brake on gravel or on fresh snow on a slip-
pery surface.
Control lamp
The control lamp lights up for a few sec-
onds when the ignition is switched on. It
goes out again after the system has run
through an automatic test sequence.
There is a fault in the ABS if:
● The control lamp does not light
up when
the ignition is switched on. ●
The control
lamp does not go out again af-
ter a few seconds.
● The control lamp lights up when the vehicle
is mov
ing.
The vehicle can still be braked in the normal
way, without the ABS function. Take the vehi-
cle to a specialised workshop as soon as
possible.
If there is a fault in the ABS, the ESC* and the
tyre pressure control lamp will also light up.
Brake system fault
If the ABS warning lamp lights up together
with the brake warning lamp , there is a
fault in the ABS function and in the brake
system ››› .
WARNING
● The anti-lock br ak
e system cannot defy the
laws of physics. Slippery and wet roads are
dangerous even with ABS! If you notice that
the ABS is working (to counteract locked
wheels under braking), you should reduce
speed immediately to suit the road and traffic
conditions. Do not let the extra safety fea-
tures tempt you into taking any risks when
driving.
● The effectiveness of ABS is also determined
by the tyr
es fitted ››› page 213.
● If the running gear or brake system is modi-
fied, the effectivenes
s of the ABS could be se-
verely limited. WARNING
● Befor e openin
g the bonnet, read and ob-
serve the warnings ››› page 201, Working in
the engine compartment.
● If the brake system warning lamp should
light up t
ogether with the ABS warning lamp
, stop the vehicle immediately and check
the brake fluid level in the reservoir
››› page 209, Brake fluid. If the brake fluid
level has dropped below the “MIN” mark you
must not drive on. Risk of accident. Obtain
technical assistance.
● If the brake fluid level is correct, the fault in
the brake sys
tem may have been caused by a
failure of the ABS system. This could cause
the rear wheels to lock quickly when you
brake. This could cause the rear to break
away. Risk of skidding. Stop the vehicle and
seek technical assistance. Electronic differential lock (XDS)*
When taking a curve, the driveshaft differen-
ti
al
mec h
anism allows the outer wheel to turn
at a higher speed than the inner wheel. In
this way, the wheel that is turning faster (out-
er wheel) receives less drive torque than the
inner wheel. This may mean that in certain
situations the torque delivered to the inner
wheel is too high, causing the wheels to
spin. On the other hand, the outer wheel is
receiving a lower drive torque than it could
transmit. This causes an overall loss of lateral »
159
Technical data
Advice
Operation
Emergencies
Safety

Operation
Selecting the normal programme
– Put the selector lever into position D.
Sel ectin
g the s por
t programme
– Put the selector lever into position S.
If you sel
ect the normal programme, D, you
will drive in the economy mode, i.e. the pro-
gramme is designed to reduce fuel consump-
tion. The gearbox changes up into a higher
gear as soon as possible and down into a
lower gear as late as possible.
If you select the sport programme, S, you will
drive in a sporty mode, i.e. a programme in
which shifts into high gears are postponed in
order to use the full power of the engine.
Selector lever positions Read the additional information carefully
› ›
›
p
age 38
Selector lever positions
The selected gear is displayed on the side of
the selector lever and on the instrument pan-
el display. The currently selected gear for the
automatic gearbox will also be shown on the
display. Tiptronic gear indicator
If the automatic
gearbox is shifted manually,
the selected gears are shown on the screen.
P - parking lock
When the selector lever is in this position,
the driven wheels are locked mechanically.
Position P on the lever must only be selected
if the vehicle is stationary.
To move selector lever from position P, the
locking button on the selector lever handle
must be pressed and the brake pedal de-
pressed at the same time while the ignition is
switched on.
To put the selector lever in position P, simply
press the lock button down and, if necessary,
depress the brake pedal down.
R - Reverse gear
The reverse gear is engaged in this position.
Reverse gear must be engaged only when the
vehicle is stationary and the engine is idling.
To move the selector lever to position R,
press the lock button down and, at the same
time, press the brake pedal down, with the
ignition switched on.
With the selector lever in position R and the
ignition switched on the following occurs:
● Reverse lights light up. ●
The air conditioner automatic ally changes
the air recirculation mode.
● The wiper starts if the windscreen washer is
on.
● The parking distance warning system*
switche
s on.
N - Neutral (idling)
If this position is selected, the gearbox is in
neutral. Power is not transmitted to the
wheels and the engine does not have a brak-
ing function.
Never use the N position to drive down a long
hill. There is no engine braking and the
brakes are subjected to excessive stain.
You could damage the automatic gearbox if
you drive down hills with the gearbox lever in
position N and the engine switched off.
D - Drive (forward)
In this position the gearbox automatically
changes to a lower or higher gear, according
to the engine's requirements, the driving
style and speed. The braking effect of the en-
gine when driving downhill is very limited
when the selector is in this position. The in-
strument panel display shows the selected
gear as well as the selector lever in position
D.
When travelling at speeds lower than 5 km/h
(3 mph) or when the vehicle is stationary,
162

Driving
press the brake pedal to change the selector
l ev
er fr om po
sition N to position D.
S - Standard driving position (Sport pro-
gramme)
When the selector lever is in position S, it will
automatically change up into a higher gear
later, and change down into a low gear, if
compared with position D. This way, it is pos-
sible to take full advantage of the engine re-
serve power, depending on the engine de-
mand, driving style and speed. The braking
effect of the engine when driving downhill is
very limited. On the instrument panel display
the selected gear is shown as well as the se-
lector lever to position S.
To select gear range S, press the lock button
on the selector lever. WARNING
● As a driver ,
you should never leave your ve-
hicle if the engine is running and a gear range
is engaged. If you have to leave your vehicle
while the engine is running, you must apply
the parking brake and put the selector lever
in position P.
● If the engine is running and if D or R is en-
gaged, y
ou will need to hold the car on the
foot brake. The car will creep forward as the
power transmission is not fully interrupted
even when the engine is idling.
● Never accelerate when moving the selector
lever or y
ou may cause an accident. ●
Never mov e the sel
ector lever to R or P
when driving. Risk of accident!
● Before driving down a long, steep slope, it
is adv
isable to reduce speed and change into
a lower gear.
● If you stop the vehicle up hill, always hold
the foot brak
e strongly depressed down to
stop it from rolling back.
● Never allow the brake to rub and do not use
the brake peda
l too often or for long periods.
Constant braking will cause the brakes to
overheat and will considerably reduce the
brake effect. This increases the braking dis-
tance and could cause the brake system to
fail.
● Never allow the car to roll down a gradient
with the gear in neutr
al N, or in selector lever
position D, even if the engine is not running.
● If the vehicle moves with no control, an ac-
cident and serious
injury may occur. WARNING
Never switch the engine off until the vehicle
is s t
ationary. You could lose control of your
vehicle. This could cause an accident and se-
rious injury.
● The airbags and belt tensioners do not
work when the ignition is
switched off.
● The brake servo does not work with the en-
gine off. You need mor
e force to stop the vehi-
cle. ●
Pow er s
teering does not work when the en-
gine is not running. That is why it is much
more difficult to turn the steering wheel.
● Never remove the key from the ignition if
the vehicl
e is in motion. The steering lock
could suddenly engage, and you would not be
able to steer the vehicle. CAUTION
If you allow the vehicle to move when the en-
gine i s swit
ched off or with the selector lever
in position “N”, take your foot off the acceler-
ator and wait until the engine starts idling
before returning to position “D”. Selector lever lock
Fig. 170
Automatic gearbox The selector lever lock in position P or N pre-
v
ents
ge
ars from being engaged inadvertent-
ly, which would cause the vehicle to move. »
163
Technical data
Advice
Operation
Emergencies
Safety

Operation
The selector lever lock is released as follows: – Switch the ignition on.
– Press and hold the brake pedal and press
the sel ect
or l ev
er lock on the left of the se-
lector lever at the same time ››› Fig. 170.
The warning lamp on the instrument panel
lights up when the brake pedal should be ap-
plied. This is essential when the selector lev-
er is taken from the P or N positions.
Level lock only engages with the vehicle sta-
tionary at a speed of up to 5 km/h (3 mph).
At speeds of over 5 km/h (3 mph) the selec-
tor lever lock is automatically deactivated in
position N.
The selector lever lock is not engaged if the
selector lever is moved quickly through posi-
tion N (e.g. when shifting from R to D). This
makes it possible, for instance, to “rock” the
vehicle backwards and forwards if it is stuck
in snow or mud. The selector lever lock en-
gages automatically if the brake pedal is not
depressed and the lever is in position N for
more than about 1 second. Selecting gears manually with Tip-
tronic mode*
Fig. 171
Changing gear with Tiptronic. Fig. 172
Steering wheel with paddle levers
f or aut
omatic
gearbox. The Tiptronic system allows the driver to se-
l
ect
ge
ars manually. Changing gear with the selector lever
– Press the selector lever from position D to
the right into the tiptr
onic selector gate.
– Lightly press the selector lever forward
››› Fig. 171
+ to change up to a higher
g e
ar .
– Lightly
press the selector lever backward
››› Fig. 171
- to change down to a lower
g e
ar .
Ch
anging gear with the steering wheel pad-
dle levers*
– Press the right paddle lever + towards the
s t
eerin g wheel
to change up ››› Fig. 172.
– Press the left paddle lever - towards the
s t
eerin g wheel
to change down ››› Fig. 172.
Using the paddle levers on the steering
wheel, you can access manual driving mode
regardless of the pre-selected driving mode.
General information about driving in tiptron-
ic mode
When accelerating, the automatic gearbox /
DSG automatic gearbox goes into a higher
gear a little before the engine reaches its
maximum permitted revolutions.
If a lower gear is selected, the automatic
gearbox / DSG automatic gearbox will only
change down when the engine cannot go
over its maximum permitted revolutions.
164

Driving
If “tiptronic” is selected whilst the vehicle is
in motion and the aut om
atic g
earbox / DSG
automatic gearbox is in third gear and selec-
tor lever position D, “tiptronic” mode will
then also be in third gear.
Changing gears in the normal or sport pro-
gramme using the steering wheel paddle lev-
ers
If the paddle levers ››› Fig. 172 are used in
the normal or sport programme, the system
switches temporarily to “tiptronic” mode. To
exit “Tiptronic” mode again, press the right
paddle lever + towards the steering wheel
f or ap
pro
ximately one second. You will also
leave “tiptronic” mode if the paddle levers
are not moved for a certain time. Note
● The gear p a
ddle levers on the steering
wheel can be operated with the selector lever
in any position and with the vehicle in mo-
tion. Driving tips
The gearbox changes gear ratios automatical-
ly
a
s the
vehicle moves.
Starting
– Start the engine with the selector lever in
position P
or N. Driving
– Press and hold the brake pedal.
– Holding down the lock button (button on
the selector lev
er), select R or D.
– Release the lever and wait a little for the
gearbox
to engage the gear (a slight move-
ment can be felt).
– Release the brake and press the accelerator
››› in Selector lever positions on
p ag
e 163 .
St
opping briefly
– If stopping for a short time, keep the vehi-
cle st
ationary by pressing the foot brake
hard to prevent the vehicle moving back-
wards on a slope or “creeping” forwards,
e.g. at traffic lights. The selector lever does
not need to be put into the positions P or N
for this.
– Do not press the accelerator.
Parking
– Pr
ess and hold the brake pedal until the ve-
hicle come
s to a standstill ››› in Selector
l ev
er po s
itions on page 163.
– Apply the handbrake.
– By pressing the lock button down, move
the selector lev
er to P and release the lock
button. Driving up and down hills
–
Press the selector lever from position “D”
to the right into the tiptr
onic selector gate.
– Lightly press the selector lever back to
chang
e down.
Holding the car on a hill
– The brake must be always pressed down to
prevent the
vehicle from “rolling back-
wards” ››› in Selector lever positions on
p ag
e 163 . Do not
try to prevent the vehicle
from “rolling backwards” by increasing the
engine speed while a range of gears is se-
lected.
Starting the vehicle up hills
– Apply the handbrake.
– With a selected gear, accelerate slowly and
at the same time, rel
ease the handbrake.
The steeper the slope, the lower the needed
gear. This increases the braking effect of the
engine. For example, when driving down a
very steep slope in third gear. If the engine
brake effect is not enough, the vehicle will
speed up. The automatic gearbox automati-
cally changes up to prevent the engine over-
revving. Use the foot brake to reduce speed
and change into 3rd gear using Tiptronic*
››› in Selector lever positions on page 163.
Y our
vehic
le has an automatic interlock
which prevents the selector lever from being »
165
Technical data
Advice
Operation
Emergencies
Safety

Towing bracket device and trailer
Tyre pressure
Set ty
re pr
essure to the maximum permissi-
ble pressure shown on the sticker on the in-
side of the fuel tank flap. Set the tyre pres-
sure of the trailer tyres in accordance with the
trailer manufacturer's recommendations.
Exterior mirrors
Check whether you can see enough of the
road behind the trailer with the standard rear
vision mirrors. If this is not the case, you
should have additional exterior mirrors fitted.
Both exterior mirrors should be mounted on
hinged extension brackets. Adjust the mirrors
to give sufficient vision to the rear. WARNING
Never transport people in a trailer. This could
res u
lt in fatal accidents. Note
● Tow in
g a trailer places additional demands
on the vehicle. We recommend additional
services between the normal inspection inter-
vals if the vehicle is used frequently for tow-
ing a trailer.
● Find out whether special regulations apply
to tow
ing a trailer in your country. Ball coupling of towing bracket*
The ball coupling is provided with instruc-
tions on fittin
g and r
emoving the ball cou-
pling of the towing bracket. WARNING
The towing bracket ball coupling must be
stor ed sec
urely in the luggage compartment
to prevent them being flung through the vehi-
cle and causing injury. Note
● By l a
w, the ball coupling must be removed
if a trailer is not being towed if it obscures
the number plate. Driving tips
Driving with a trailer always requires extra
c
ar
e.
W eight
distribution
The weight distribution of a loaded trailer
with an unladen vehicle is very unfavourable.
However, if this cannot be avoided, drive ex-
tra slowly to allow for the unbalanced weight
distribution. Speed
The stabi
lity of the vehicle and trailer is re-
duced with increasing speed. For this reason,
it is advisable not to drive at the maximum
permissible speed in an unfavourable road,
weather or wind conditions. This applies es-
pecially when driving downhill.
You should always reduce speed immediately
if the trailer shows the slightest sign of snak-
ing. Never try to stop the “snaking” by in-
creasing speed.
Always brake in due course. If the trailer has
an overrun brake, apply the brakes gently at
first and then, firmly. This will prevent the
jerking that can be caused by locking of trail-
er wheels. Select a low gear in due course
before going down a steep downhill. This en-
ables you to use the engine braking to slow
down the vehicle.
Reheating
At very high temperatures and during pro-
longed slopes, driving with a low gear and
high engine speed; always monitor whether
the excessive coolant temperature gauge is
activated ››› page 207.
187
Technical data
Advice
Operation
Emergencies
Safety

Care and maintenance
– Rin se the
vehic
le thoroughly with water.
– Dry the vehicle surface gently with a cha-
mois le
ather.
– In cold temperature, dry the rubber seals
and their surf
aces to prevent them from
freezing. Apply silicone spray to the rubber
seals.
After washing the vehicle – After washing, avoid sudden and sharp
braking. “Dr
y” the brakes by braking sever-
al times. WARNING
● Wash y
our vehicle with the ignition switch-
ed off.
● Protect your hands and arms from cuts on
sharp metal
edges when cleaning the under-
body, the inside of the wheel housings etc.
Risk of injury.
● Water, ice and salt on the brake system can
reduce brak
ing effectiveness. Risk of acci-
dent. CAUTION
● Never remo v
e dirt, mud or dust if the vehi-
cle surface is dry. Never use a dry cloth or
sponge for cleaning purposes. This could
scratch the paintwork or glass on your vehi-
cle. ●
Washin g the
vehicle in low temperatures:
when washing the vehicle with a hose, do not
direct water into the lock cylinders or the
gaps around the doors, rear lid, or sunroof.
Risk of freezing. For the sake of the environment
To protect the environment, the vehicle
shou ld be w a
shed only in specially provided
wash bays, to prevent toxic, oil-laden waste
water from entering the sewer system. In
some places, washing vehicles outside wash
bays is prohibited. Note
Do not wash the vehicle in direct sunlight. Washing the vehicle with a high pres-
s
ur
e c l
eaner Be particularly careful when using a high
pr
e
ss
ure cleaner!
– Always observe the instructions for the
high-press
ure cleaner, particularly those
concerning the pressure and the spraying
distance.
– Increase the spraying distance for soft ma-
terials
and painted bumpers. –
Do not use a high pre
ssure cleaner to re-
move ice or snow from windows
››› page 194.
– Never use concentrated jet nozzles (“rotat-
ing jets”) ››
› .
– After washing, avoid sudden and sharp
br ak
ing. “Dr
y” the brakes by braking sever-
al times ››› page 152. WARNING
● Never wa sh ty
res with a concentrated jet
(“rotating nozzle”). Even at large spraying
distances and short cleaning times, damage
can occur to the tyres. This may cause an ac-
cident.
● Water, ice and salt on the brake system can
reduce brak
ing effectiveness. Risk of acci-
dent. CAUTION
● Do not use w at
er hotter than +60 °C
(+140 °F). This could damage the vehicle.
● To avoid damage to the vehicle, keep a suf-
ficient dis
tance from sensitive materials such
as flexible hoses, plastic, soundproofing ma-
terial, etc. This also applies to bumpers pain-
ted in the colour of the bodywork. The closer
the nozzle is to the surface, the greater the
wear on the material. 193
Technical data
Advice
Operation
Emergencies
Safety